/* roulang page: index */
:root{
  --brand:#5B3DF5;
  --brand-dark:#4527E0;
  --brand-2:#14D3B8;
  --brand-soft:#EFEBFF;
  --accent:#FF6B35;
  --bg:#F6F7FC;
  --card:#FFFFFF;
  --ink:#12142B;
  --ink-2:#5A6079;
  --ink-3:#8B90A6;
  --line:#E7E9F5;
  --dark:#12142B;
  --dark-2:#1D1F45;
  --r-xl:28px;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --pill:999px;
  --sh-1:0 8px 24px rgba(91,61,245,.08);
  --sh-2:0 16px 40px rgba(91,61,245,.16);
  --sh-3:0 8px 30px rgba(0,0,0,.25);
  --grad:linear-gradient(135deg,#5B3DF5 0%,#14D3B8 100%);
  --nav-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--brand-dark)}
button{font:inherit;cursor:pointer;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.25;font-weight:700;color:var(--ink)}
h1{font-size:clamp(30px,5vw,54px);font-weight:800;letter-spacing:-.5px;line-height:1.15}
h2{font-size:clamp(24px,3.4vw,36px)}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
section[id]{scroll-margin-top:96px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.9);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s ease,background-color .24s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(18,20,43,.08);background:rgba(255,255,255,.96)}
.nav-wrap{display:flex;align-items:center;gap:16px;height:var(--nav-h);transition:height .24s ease}
.site-header.is-scrolled .nav-wrap{height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--ink);flex:0 0 auto}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-size:18px;font-weight:800;box-shadow:0 8px 18px rgba(91,61,245,.28);
}
.brand-text{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;letter-spacing:-.2px;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-links a{
  padding:9px 13px;border-radius:var(--pill);font-size:14.5px;color:var(--ink-2);font-weight:500;white-space:nowrap;
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-links a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
.nav-links a.is-current{color:var(--brand);font-weight:700}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;box-shadow:var(--sh-1);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s ease;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--pill);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,filter .2s ease-out;
}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px rgba(91,61,245,.28)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:scale(1.02)}
.btn-primary:active{transform:translateY(1px) scale(1)}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-dark)}
.btn-light{background:#fff;color:var(--brand);box-shadow:0 12px 30px rgba(9,10,40,.2)}
.btn-light:hover{color:var(--brand-dark);transform:translateY(-2px)}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);
}
.btn-link:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:4px}

/* 首屏 */
.hero{position:relative;background:var(--grad);color:#fff;overflow:hidden}
.hero::before{
  content:"";position:absolute;width:520px;height:520px;right:-160px;top:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.34),rgba(255,255,255,0) 68%);
}
.hero::after{
  content:"";position:absolute;width:420px;height:420px;left:-180px;bottom:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.2),rgba(255,255,255,0) 70%);
}
.hero-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
  padding:56px 0 64px;
}
.hero h1{color:#fff;max-width:620px}
.hero-sub{color:rgba(255,255,255,.92);font-size:17px;max-width:560px;margin-top:18px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero .btn-ghost{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.62)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.26);color:#fff}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:0 28px 60px rgba(9,10,40,.32);background:var(--brand-soft);
}
.hero-float{
  position:absolute;left:-16px;bottom:26px;background:#fff;color:var(--ink);
  border-radius:var(--r-md);padding:14px 20px;box-shadow:0 18px 42px rgba(9,10,40,.26);
  display:flex;align-items:center;gap:14px;
}
.hero-float b{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.hero-float span{font-size:12.5px;color:var(--ink-2);line-height:1.5;display:block}
.hero-stats{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding-bottom:56px}
.hero-stat{
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  border-radius:var(--r-sm);padding:16px 18px;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.hero-stat b{display:block;font-size:clamp(20px,2.4vw,28px);font-weight:800;color:#fff;font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{font-size:13px;color:rgba(255,255,255,.86)}

/* 信任条 */
.trust{background:#fff;border-bottom:1px solid var(--line)}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 28px;padding:18px 0;font-size:14px;color:var(--ink-2)}
.trust-item{display:inline-flex;align-items:center;gap:8px}
.trust-item svg{color:var(--brand);flex:0 0 auto}

/* 通用板块 */
.section{padding:100px 0}
.section-alt{background:#fff}
.section-head{max-width:780px;margin-bottom:44px}
.section-tag{
  display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--pill);
  background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600;margin-bottom:16px;
}
.section-desc{color:var(--ink-2);margin-top:14px;font-size:16px;max-width:760px}
.section-head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* 卖点 Bento */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.bento-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;
  box-shadow:var(--sh-1);transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.bento-card h3{margin-bottom:10px}
.bento-card p{font-size:14.5px;color:var(--ink-2);line-height:1.8}
.bento-main{
  grid-column:span 2;grid-row:span 2;
  background:linear-gradient(150deg,#EFEBFF 0%,#E7FBF6 100%);
  border-color:#DED7FF;padding:34px;display:flex;flex-direction:column;
}
.bento-main h3{font-size:24px}
.bento-main p{font-size:15.5px;color:var(--ink-2);max-width:520px}
.bento-wide{
  grid-column:span 3;display:flex;align-items:center;gap:24px;flex-wrap:wrap;
  background:linear-gradient(120deg,#12142B 0%,#28205C 100%);border-color:transparent;color:#fff;
}
.bento-wide h3{color:#fff}
.bento-wide p{color:rgba(255,255,255,.78);margin:0;font-size:15px}
.bento-wide .ico{background:rgba(255,255,255,.14)}
.ico{
  width:44px;height:44px;border-radius:13px;background:var(--grad);color:#fff;
  display:grid;place-items:center;margin-bottom:18px;box-shadow:0 10px 22px rgba(91,61,245,.24);
}
.ico-soft{background:var(--brand-soft);color:var(--brand);box-shadow:none}
.bento-metric{
  display:flex;align-items:baseline;gap:10px;margin:24px 0 18px;
}
.bento-metric b{font-size:38px;font-weight:800;font-variant-numeric:tabular-nums;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-fill-color:transparent}
.bento-metric span{font-size:13px;color:var(--ink-3)}
.micro-link{margin-top:auto;padding-top:18px}

/* 演示区 */
.demo-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:center}
.tabs{
  display:flex;gap:6px;background:#fff;border:1px solid var(--line);border-radius:var(--pill);
  padding:6px;box-shadow:var(--sh-1);
}
.tab{
  flex:1;height:44px;border:0;background:transparent;border-radius:var(--pill);
  color:var(--ink-2);font-weight:600;font-size:14.5px;transition:.2s ease;
}
.tab:hover{background:var(--brand-soft);color:var(--brand)}
.tab.is-active{background:var(--grad);color:#fff;box-shadow:0 10px 22px rgba(91,61,245,.26)}
.panel{display:none;margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh-1)}
.panel.is-active{display:block;animation:fadeUp .32s ease-out}
.panel h3{margin-bottom:10px}
.panel p{font-size:15px;color:var(--ink-2)}
.panel .panel-note{font-size:13px;color:var(--ink-3);margin-top:14px}
.demo-visual{position:relative}
.demo-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:0 24px 54px rgba(18,20,43,.16);background:var(--brand-soft);
}
.demo-badge{
  position:absolute;top:20px;left:20px;background:rgba(18,20,43,.82);color:#fff;
  border:1px solid rgba(255,255,255,.22);border-radius:var(--pill);padding:8px 16px;
  font-size:13px;font-weight:600;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* 证据区 */
.proof{background:linear-gradient(135deg,#12142B 0%,#1D1F45 100%);color:#fff;padding:96px 0;position:relative;overflow:hidden}
.proof::before{
  content:"";position:absolute;width:560px;height:560px;right:-200px;top:-240px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,211,184,.22),rgba(20,211,184,0) 70%);
}
.proof-inner{position:relative;z-index:2}
.proof-head{margin-bottom:44px;max-width:720px}
.proof-head h2{color:#fff}
.proof-head p{color:rgba(255,255,255,.72);margin-top:14px}
.proof-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:center}
.proof-stats{display:grid;gap:26px}
.proof-stat b{
  display:block;font-size:clamp(30px,4.6vw,46px);font-weight:800;line-height:1.1;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,#B7ACFF 0%,#14D3B8 100%);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.proof-stat span{font-size:14px;color:rgba(255,255,255,.72)}
.proof-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.proof-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-3);display:flex;flex-direction:column;gap:12px;
}
.proof-card h3{color:#fff;font-size:17px}
.proof-card p{color:rgba(255,255,255,.76);font-size:14px;margin:0}
.proof-card .who{font-size:12.5px;color:rgba(255,255,255,.56);margin-top:auto}
.proof-chip{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:var(--pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:12.5px;color:#fff;width:fit-content;
}

/* 版本方案 */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:34px 30px;box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.price-card.is-featured{
  border:2px solid transparent;
  background-image:linear-gradient(#fff,#fff),var(--grad);
  background-origin:border-box;background-clip:padding-box,border-box;
  transform:scale(1.04);box-shadow:var(--sh-2);
}
.price-card.is-featured:hover{transform:scale(1.04) translateY(-4px)}
.price-badge{
  position:absolute;top:-14px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#fff;font-size:12.5px;font-weight:700;
  padding:6px 16px;border-radius:var(--pill);box-shadow:0 8px 18px rgba(255,107,53,.32);white-space:nowrap;
}
.price-name{font-size:18px;font-weight:700;margin-bottom:6px}
.price-note{font-size:13.5px;color:var(--ink-3);margin-bottom:18px}
.price-amount{
  display:flex;align-items:baseline;gap:6px;font-size:38px;font-weight:800;
  font-variant-numeric:tabular-nums;line-height:1;margin-bottom:22px;
}
.price-amount small{font-size:14px;font-weight:600;color:var(--ink-3)}
.feature-list{margin-bottom:26px}
.feature-list li{display:flex;gap:10px;padding:9px 0;font-size:14.5px;color:var(--ink-2);line-height:1.6}
.feature-list svg{flex:0 0 auto;color:var(--brand-2);margin-top:4px}
.price-card .btn{margin-top:auto;width:100%}

/* 分类入口 */
.cat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.cat-card{
  display:flex;flex-direction:column;gap:12px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:30px;box-shadow:var(--sh-1);
  transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:#D8D0FF}
.cat-card h3{font-size:20px;color:var(--ink)}
.cat-card p{font-size:14.5px;color:var(--ink-2);margin:0}
.cat-card .cat-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}
.chip{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--pill);
  background:var(--brand-soft);color:var(--brand);font-size:12.5px;font-weight:600;
}
.chip-plain{background:#F1F2F9;color:var(--ink-2)}
.cat-card .btn-link{margin-top:6px}

/* 资讯区 */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2)}
.news-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--brand-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease-out}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:17px;font-weight:700;line-height:1.55;margin:0}
.news-title a{color:var(--ink)}
.news-title a:hover{color:var(--brand)}
.news-title span,.news-excerpt{
  display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title span{-webkit-line-clamp:2}
.news-excerpt{font-size:14px;color:var(--ink-2);margin:0;-webkit-line-clamp:3;line-height:1.75}
.news-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-3);
}
.news-empty{
  grid-column:1/-1;text-align:center;padding:60px 24px;background:#fff;
  border:1px dashed #D9D2FF;border-radius:var(--r-lg);
}
.news-empty .ico{margin:0 auto 16px}
.news-empty p{color:var(--ink-2);font-size:15px;margin-bottom:18px}

/* FAQ */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s ease,border-color .2s ease}
.faq-item:hover{border-color:#D8D0FF}
.faq-item.is-open{box-shadow:var(--sh-1);border-color:#D8D0FF}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:700;transition:transform .25s ease,background-color .25s ease,color .25s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 24px 20px;font-size:15px;color:var(--ink-2);line-height:1.8;margin:0}

/* 底部 CTA */
.cta-band{
  background:var(--grad);border-radius:var(--r-xl);padding:56px;color:#fff;
  display:grid;grid-template-columns:1.5fr .8fr;gap:32px;align-items:center;
  box-shadow:0 24px 60px rgba(91,61,245,.28);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;width:380px;height:380px;right:-140px;bottom:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),rgba(255,255,255,0) 70%);
}
.cta-band h2{color:#fff;position:relative;z-index:2}
.cta-band p{color:rgba(255,255,255,.9);margin-top:14px;position:relative;z-index:2;font-size:15.5px}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px}
.cta-band .btn{width:100%}
.cta-hint{font-size:13px;color:rgba(255,255,255,.82);text-align:center}

/* 页脚 */
.site-footer{background:var(--dark);color:#A9AEC4;margin-top:100px;position:relative}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding:72px 0 44px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{width:36px;height:36px;font-size:17px;border-radius:11px}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800}
.footer-intro{font-size:14px;line-height:1.85;color:#A9AEC4;max-width:340px}
.site-footer h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.2px}
.site-footer a{color:#A9AEC4;font-size:14px;display:block;padding:6px 0}
.site-footer a:hover{color:#fff}
.footer-contact p{font-size:14px;color:#A9AEC4;margin:0 0 6px}
.sub-form{display:flex;gap:10px;margin-top:16px}
.sub-form input{
  flex:1;min-width:0;height:48px;border-radius:var(--pill);border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.08);color:#fff;padding:0 20px;font-size:14px;
}
.sub-form input::placeholder{color:rgba(255,255,255,.5)}
.sub-form input:focus{outline:none;border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(20,211,184,.24)}
.sub-form button{
  height:48px;padding:0 22px;border:0;border-radius:var(--pill);background:var(--grad);
  color:#fff;font-size:14px;font-weight:600;white-space:nowrap;transition:filter .2s ease,transform .2s ease;
}
.sub-form button:hover{filter:brightness(1.06);transform:translateY(-1px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 26px;text-align:center;
  font-size:13px;color:rgba(169,174,196,.86);line-height:1.9;
}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;height:52px;padding:0 24px;
  border-radius:var(--pill);background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 16px 34px rgba(91,61,245,.34);
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .28s ease,transform .28s ease;
}
.float-cta:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px)}
.float-cta.is-visible{opacity:1;transform:none;pointer-events:auto}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,20,43,.45);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);background:#fff;z-index:80;
  transform:translateX(101%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:22px 22px 28px;overflow-y:auto;
  box-shadow:-16px 0 40px rgba(18,20,43,.16);
}
.drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.drawer-close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;font-size:18px;color:var(--ink-2);
}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-nav{padding:8px 0 20px}
.drawer-nav a{
  display:block;padding:15px 4px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:500;color:var(--ink);
}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand)}
.drawer-foot{margin-top:auto;display:grid;gap:10px}
body.drawer-open{overflow:hidden}
body.drawer-open .float-cta{display:none}

/* 响应式 */
@media (max-width:1180px){
  .nav-links a{padding:9px 10px;font-size:14px}
}
@media (max-width:1023px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-primary{display:none}
  .section{padding:76px 0}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:40px 0 40px}
  .hero-stats{grid-template-columns:repeat(2,1fr);padding-bottom:48px}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-main{grid-column:span 2;grid-row:auto}
  .bento-wide{grid-column:span 2}
  .demo-grid{grid-template-columns:1fr;gap:34px}
  .demo-visual{order:-1}
  .proof{padding:76px 0}
  .proof-grid{grid-template-columns:1fr;gap:34px}
  .proof-cards{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr;gap:26px;max-width:520px;margin:0 auto}
  .price-card.is-featured{transform:none}
  .price-card.is-featured:hover{transform:translateY(-4px)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;padding:56px 0 36px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .section{padding:60px 0}
  .bento{grid-template-columns:1fr}
  .bento-main,.bento-wide{grid-column:span 1}
  .bento-wide{flex-direction:column;align-items:flex-start;gap:14px}
  .news-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:32px}
  .trust-row{justify-content:flex-start;gap:10px 20px;font-size:13.5px}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-intro{max-width:none}
  .faq-q{font-size:16px;padding:18px 20px}
  .faq-a p{padding:0 20px 18px}
}
@media (max-width:640px){
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:12px}
  .hero-float{left:12px;bottom:14px;padding:12px 16px}
  .hero-float b{font-size:22px}
  .cta-band{padding:32px 22px;border-radius:var(--r-lg)}
  .price-card{padding:28px 22px}
  .panel{padding:22px}
  .tabs{gap:4px;padding:5px}
  .tab{font-size:13.5px;height:42px}
  .float-cta{
    left:0;right:0;bottom:0;height:60px;border-radius:20px 20px 0 0;padding:0 18px;
    justify-content:space-between;font-size:14px;
    box-shadow:0 -10px 30px rgba(18,20,43,.18);
    padding-bottom:env(safe-area-inset-bottom,0);
  }
  .float-cta span.cta-strong{font-weight:700}
  body{padding-bottom:0}
  .sub-form{flex-direction:column}
  .sub-form button{width:100%}
}

/* roulang page: article */
:root{
  --brand:#5B3DF5;
  --brand-2:#14D3B8;
  --brand-deep:#4527E0;
  --brand-soft:#EFEBFF;
  --accent:#FF6B35;
  --bg:#F6F7FC;
  --card:#FFFFFF;
  --dark-1:#12142B;
  --dark-2:#1D1F45;
  --text:#12142B;
  --text-2:#5A6079;
  --text-3:#8B90A6;
  --border:#E7E9F5;
  --grad:linear-gradient(135deg,#5B3DF5 0%,#14D3B8 100%);
  --r-lg:24px;
  --r-md:20px;
  --r-sm:12px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(91,61,245,.08);
  --shadow-hover:0 16px 40px rgba(91,61,245,.16);
  --shadow-dark:0 8px 30px rgba(0,0,0,.25);
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
button{font:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 10px 30px rgba(18,20,43,.08)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  height:76px;transition:height .25s ease;
}
.site-header.is-scrolled .header-inner{height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:12px;
  background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;letter-spacing:0;
  box-shadow:0 6px 18px rgba(91,61,245,.3);
}
.brand-text{
  font-size:18px;font-weight:800;letter-spacing:-.3px;
  background:linear-gradient(120deg,#5B3DF5,#14D3B8);
  -webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
  white-space:nowrap;
}
.nav-links{display:none;align-items:center;gap:2px}
.nav-links a{
  display:inline-block;padding:8px 11px;border-radius:var(--r-pill);
  font-size:13.5px;color:var(--text-2);font-weight:500;white-space:nowrap;
  transition:background .2s ease,color .2s ease;
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-links a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:700}
.header-actions{display:flex;align-items:center;gap:12px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{
  background:var(--grad);color:#fff;
  box-shadow:0 10px 26px rgba(91,61,245,.28);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px) scale(1.02);box-shadow:0 16px 36px rgba(91,61,245,.36)}
.btn-primary:active{transform:translateY(1px) scale(1)}
.btn-ghost{
  background:#fff;color:var(--brand);border:1.5px solid var(--brand);
}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
  width:44px;height:44px;border-radius:14px;border:1px solid var(--border);background:#fff;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text);transition:transform .2s ease,opacity .2s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.drawer-overlay{
  position:fixed;inset:0;background:rgba(18,20,43,.42);z-index:70;
  opacity:0;pointer-events:none;transition:opacity .28s ease;
}
.drawer-overlay.is-open{opacity:1;pointer-events:auto}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);
  background:#fff;z-index:80;transform:translateX(102%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;box-shadow:-20px 0 50px rgba(18,20,43,.16);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px;border-bottom:1px solid var(--border);
}
.drawer-head strong{font-size:16px;font-weight:800}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--border);font-size:18px;color:var(--text-2);line-height:1}
.drawer-nav{display:flex;flex-direction:column;padding:6px 0}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;padding:0 20px;
  font-size:15px;color:var(--text);border-bottom:1px solid var(--border);
}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-foot{margin-top:auto;padding:20px;border-top:1px solid var(--border)}
.drawer-foot .btn{width:100%}

@media (min-width:1024px){
  .nav-links{display:flex}
  .nav-toggle{display:none}
  .mobile-drawer,.drawer-overlay{display:none}
}

/* ============ 文章区域 ============ */
.site-main{padding:0 0 20px}
.breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:26px 0 0;font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--brand);font-weight:500}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#C6CAD9}
.breadcrumb .crumb-current{
  color:var(--text-3);max-width:340px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;
}

.article-head{padding:26px 0 0;max-width:880px}
.pill{
  display:inline-flex;align-items:center;height:28px;padding:0 14px;
  border-radius:var(--r-pill);font-size:12.5px;font-weight:600;letter-spacing:.2px;
}
.pill-brand{background:var(--brand-soft);color:var(--brand)}
.pill-accent{background:rgba(255,107,53,.12);color:var(--accent)}
.article-head h1{
  font-size:clamp(26px,3.6vw,40px);line-height:1.3;font-weight:800;
  letter-spacing:-.4px;margin:16px 0 16px;color:var(--text);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13.5px;color:var(--text-3);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#D3D7E6}

.article-cover{
  margin:26px 0 0;border-radius:20px;overflow:hidden;
  background:var(--brand-soft);border:1px solid var(--border);
  aspect-ratio:16/9;
}
.article-cover img{width:100%;height:100%;object-fit:cover}

.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr);
  gap:36px;padding:36px 0 0;
}

.paper{
  background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:30px 22px;box-shadow:var(--shadow);
}
@media (min-width:768px){.paper{padding:40px 38px}}

.prose{font-size:17px;line-height:1.9;color:#252944}
.prose > *:first-child{margin-top:0}
.prose p{margin:0 0 1.1em}
.prose h2{
  font-size:clamp(20px,2.4vw,26px);font-weight:700;line-height:1.45;
  margin:2em 0 .8em;padding-left:14px;position:relative;color:var(--text);
}
.prose h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;
  border-radius:4px;background:var(--grad);
}
.prose h3{font-size:20px;font-weight:600;margin:1.6em 0 .6em;color:var(--text)}
.prose ul,.prose ol{padding-left:1.35em;margin:0 0 1.1em}
.prose li{margin-bottom:.5em}
.prose strong{font-weight:700;color:var(--text)}
.prose blockquote{
  margin:1.4em 0;padding:16px 22px;border-left:4px solid var(--brand);
  background:var(--brand-soft);border-radius:0 16px 16px 0;color:#363B5E;
}
.prose blockquote p:last-child{margin-bottom:0}
.prose img{border-radius:20px;margin:1.4em 0;width:100%}
.prose figure{margin:1.4em 0}
.prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.prose table{
  width:100%;border-collapse:collapse;margin:1.4em 0;
  font-size:15.5px;border:1px solid var(--border);border-radius:14px;overflow:hidden;
}
.prose th,.prose td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border)}
.prose thead th{background:#F0F1FA;font-weight:600;color:var(--text)}
.prose tbody tr:nth-child(even){background:#FAFAFE}
.prose tbody tr:last-child td{border-bottom:0}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--brand-deep)}
.prose hr{border:0;height:1px;background:var(--border);margin:2em 0}

.empty-state{
  text-align:center;padding:48px 20px;border-radius:var(--r-md);
  background:#FBFBFE;border:1px dashed var(--border);
}
.empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:18px;
  background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:24px;font-weight:800;
}
.empty-state h2{font-size:22px;font-weight:700;margin-bottom:10px;color:var(--text)}
.empty-state p{font-size:15px;color:var(--text-2);margin-bottom:22px}

.article-foot{margin-top:32px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 16px;
  border-radius:var(--r-pill);background:#fff;border:1px solid var(--border);
  font-size:13px;color:var(--text-2);transition:all .2s ease;
}
.tag:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.foot-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 侧栏 ============ */
.article-side{display:flex;flex-direction:column;gap:20px}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr) 300px;gap:44px}
  .article-side{position:sticky;top:100px;align-self:start}
}
.side-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow);
  transition:box-shadow .2s ease,transform .2s ease;
}
.side-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}
.side-card h3{
  font-size:15px;font-weight:700;margin-bottom:10px;color:var(--text);
  display:flex;align-items:center;gap:8px;
}
.side-card h3::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--grad);flex-shrink:0;
}
.side-card p{font-size:13.5px;line-height:1.75;color:var(--text-2)}
.side-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:2px;margin-top:6px}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 12px;border-radius:12px;font-size:14px;color:var(--text-2);
  transition:background .2s ease,color .2s ease;
}
.side-list a:hover{background:var(--brand-soft);color:var(--brand)}
.side-list a::after{content:"›";font-size:16px;color:#C6CAD9;transition:transform .2s ease}
.side-list a:hover::after{transform:translateX(2px);color:var(--brand)}
.side-metric{
  display:flex;gap:14px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border);
}
.side-metric div{flex:1}
.side-metric b{
  display:block;font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.side-metric span{font-size:12px;color:var(--text-3)}

/* ============ 底部 CTA ============ */
.cta-band{
  margin:76px auto 0;max-width:var(--container);border-radius:28px;
  background:var(--grad);padding:52px 28px;text-align:center;color:#fff;
  box-shadow:0 22px 50px rgba(91,61,245,.26);position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-70px;top:-70px;width:240px;height:240px;
  border-radius:50%;background:rgba(255,255,255,.14);
}
.cta-band h2{font-size:clamp(22px,3vw,32px);font-weight:800;line-height:1.35;margin-bottom:14px}
.cta-band p{font-size:15px;color:rgba(255,255,255,.9);margin-bottom:26px}
.cta-band .btn-light{
  background:#fff;color:var(--brand);box-shadow:0 12px 30px rgba(18,20,43,.18);
}
.cta-band .btn-light:hover{transform:translateY(-2px) scale(1.02);color:var(--brand)}

/* ============ 浮动 CTA ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:50;
  display:inline-flex;align-items:center;gap:9px;
  padding:14px 22px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-weight:600;font-size:14px;
  box-shadow:0 14px 34px rgba(91,61,245,.35);
  opacity:0;transform:translateY(16px);pointer-events:none;
  transition:opacity .3s ease,transform .3s ease;
}
.float-cta.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}
.float-cta:hover{color:#fff;transform:translateY(-2px)}
@media (max-width:767px){
  .float-cta{
    left:0;right:0;bottom:0;border-radius:18px 18px 0 0;
    display:flex;justify-content:space-between;gap:12px;
    padding:12px 18px calc(12px + env(safe-area-inset-bottom,0px));
    font-size:13.5px;
  }
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;background:var(--dark-1);color:#A9AEC4;
  margin-top:84px;padding:60px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:34px;padding-bottom:44px}
@media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800}
.footer-intro{font-size:13.5px;line-height:1.85;color:#A9AEC4;max-width:340px}
.site-footer h4{
  color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;
}
.footer-grid a{
  display:block;font-size:13.5px;color:#A9AEC4;padding:6px 0;
  transition:color .2s ease,transform .2s ease;
}
.footer-grid a:hover{color:#fff;transform:translateX(3px)}
.footer-contact p{font-size:13.5px;color:#A9AEC4;margin-bottom:14px}
.sub-form{display:flex;gap:8px;flex-wrap:wrap}
.sub-form input{
  flex:1;min-width:170px;height:48px;padding:0 20px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;outline:none;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.sub-form input::placeholder{color:#7E849E}
.sub-form input:focus{
  border-color:var(--brand-2);background:rgba(255,255,255,.1);
  box-shadow:0 0 0 4px rgba(20,211,184,.18);
}
.sub-form button{
  height:48px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:14px;font-weight:600;
  transition:transform .2s ease,box-shadow .2s ease;
}
.sub-form button:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(91,61,245,.36)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);
  padding:22px 0;text-align:center;font-size:13px;color:#8B90A6;
  display:flex;flex-direction:column;gap:8px;
}
@media (min-width:768px){
  .footer-bottom{flex-direction:row;justify-content:space-between;text-align:left}
}

@media (max-width:520px){
  .container{padding:0 18px}
  .brand-text{font-size:16px}
  .article-head h1{font-size:24px}
  .prose{font-size:16.5px}
  .cta-band{border-radius:22px;padding:40px 20px}
  .float-cta{font-size:13px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
  --brand:#5B3DF5;
  --brand-hover:#4527E0;
  --brand-2:#14D3B8;
  --brand-soft:#EFEBFF;
  --accent:#FF6B35;
  --bg:#F6F7FC;
  --card:#FFFFFF;
  --dark:#12142B;
  --dark-2:#1D1F45;
  --text:#12142B;
  --text-2:#5A6079;
  --text-3:#8B90A6;
  --border:#E7E9F5;
  --grad:linear-gradient(135deg,#5B3DF5 0%,#14D3B8 100%);
  --grad-soft:linear-gradient(135deg,rgba(91,61,245,.12) 0%,rgba(20,211,184,.16) 100%);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:20px;
  --r-sm:16px;
  --r-pill:999px;
  --shadow:0 8px 24px rgba(91,61,245,.08);
  --shadow-hover:0 16px 40px rgba(91,61,245,.16);
  --shadow-dark:0 8px 30px rgba(0,0,0,.25);
  --gap-section:96px;
  --header-h:76px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
}
body.locked{overflow:hidden}
img{display:block;max-width:100%;border-radius:var(--r-md);background:var(--brand-soft)}
a{color:var(--brand);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--brand-hover)}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.2px}
h1{font-size:clamp(30px,4.6vw,46px);line-height:1.18;font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(24px,3.2vw,34px);line-height:1.28;font-weight:700}
h3{font-size:20px;line-height:1.4;font-weight:600}
h4{font-size:15px;font-weight:700}
p{margin:0 0 16px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--gap-section) 0}
.section-tight{padding:56px 0}
.section-head{max-width:820px;margin-bottom:40px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 16px;margin-bottom:18px;
  border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;letter-spacing:.4px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
.lead{font-size:17px;line-height:1.9;color:var(--text-2);max-width:760px}
.muted{color:var(--text-3);font-size:14px}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease-out;
}
.site-header.scrolled{box-shadow:0 10px 30px rgba(18,20,43,.08)}
.header-inner{
  display:flex;align-items:center;gap:20px;
  height:var(--header-h);
  transition:height .2s ease-out;
}
.site-header.scrolled .header-inner{height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.logo:hover{color:var(--text)}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:12px;
  background:var(--grad);color:#fff;
  font-size:18px;font-weight:800;line-height:1;
  box-shadow:0 6px 16px rgba(91,61,245,.28);
}
.logo-text{font-size:17px;font-weight:800;letter-spacing:-.3px}
.logo-text em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;justify-content:center;flex-wrap:wrap}
.nav-links a{
  display:inline-flex;align-items:center;
  height:38px;padding:0 14px;border-radius:var(--r-pill);
  color:var(--text-2);font-size:14.5px;font-weight:500;
  transition:background .2s ease-out,color .2s ease-out;
}
.nav-links a:hover{background:#F3F1FF;color:var(--brand)}
.nav-links a.active{background:var(--brand-soft);color:var(--brand);font-weight:700}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background .2s ease-out,color .2s ease-out;
  white-space:nowrap;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(91,61,245,.24)}
.btn-primary:hover{color:#fff;filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 16px 34px rgba(91,61,245,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;color:var(--brand);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-hover)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;font-weight:600;color:var(--brand);
}
.btn-link::after{content:"→";transition:transform .2s ease-out}
.btn-link:hover::after{transform:translateX(3px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:14px;
  border:1px solid var(--border);background:#fff;
  color:var(--text);font-size:18px;line-height:1;
}
.nav-toggle:hover{background:var(--brand-soft);color:var(--brand)}

/* 抽屉 */
.drawer{
  position:fixed;top:0;right:0;z-index:80;
  width:min(340px,86vw);height:100%;
  background:#fff;border-left:1px solid var(--border);
  box-shadow:-18px 0 40px rgba(18,20,43,.14);
  transform:translateX(102%);
  transition:transform .28s ease-out;
  display:flex;flex-direction:column;
  padding:18px 0 24px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:0 20px 16px;border-bottom:1px solid var(--border)}
.drawer-close{width:38px;height:38px;border-radius:12px;background:var(--brand-soft);color:var(--brand);font-size:16px}
.drawer nav{flex:1 1 auto;overflow-y:auto;padding:8px 0}
.drawer nav a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:52px;padding:0 20px;color:var(--text);
  border-bottom:1px solid var(--border);font-size:15.5px;
}
.drawer nav a:hover,.drawer nav a.active{background:var(--brand-soft);color:var(--brand);font-weight:700}
.drawer nav a::after{content:"›";color:var(--text-3)}
.drawer-foot{padding:16px 20px 0;border-top:1px solid var(--border)}
.drawer-foot .btn{width:100%}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(18,20,43,.42);
  opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s ease-out;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* 面包屑 */
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:20px 0 0;font-size:13.5px;color:var(--text-3);
}
.breadcrumb a{color:var(--brand);font-weight:500}
.breadcrumb span.sep{color:var(--text-3)}
.breadcrumb .current{color:var(--text-2)}

/* 分类 Hero */
.cat-hero{
  position:relative;overflow:hidden;
  margin-top:20px;
  border:1px solid var(--border);
  border-radius:var(--r-xl);
  background:var(--grad-soft);
  padding:52px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:360px;height:360px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,211,184,.32),rgba(20,211,184,0));
  pointer-events:none;
}
.cat-hero-text{position:relative;z-index:1}
.cat-hero-text h1{margin-bottom:18px}
.cat-hero-text .lead{max-width:560px;color:var(--text-2)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.82);border:1px solid rgba(91,61,245,.16);
  color:var(--brand);font-size:13px;font-weight:600;
}
.cat-hero-media{position:relative;z-index:1}
.cat-hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--shadow);
}
.float-badge{
  position:absolute;left:-14px;bottom:20px;
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);
}
.float-badge strong{
  font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.float-badge span{font-size:12.5px;color:var(--text-3);line-height:1.4}

/* 要点卡片 */
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.point-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:30px;box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.point-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.point-card .icon{
  width:44px;height:44px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:18px;font-weight:800;margin-bottom:18px;
}
.point-card h3{margin-bottom:10px}
.point-card p{color:var(--text-2);font-size:15px}
.point-card .extra{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--border);
  font-size:13.5px;color:var(--text-3);
}
.point-card.wide-soft{
  background:linear-gradient(135deg,rgba(91,61,245,.07),rgba(20,211,184,.1));
  border-color:rgba(91,61,245,.18);
}

/* 步骤区 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-lg);padding:32px 26px 30px;box-shadow:var(--shadow);
  transition:transform .2s ease-out,box-shadow .2s ease-out;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-num{
  display:block;font-size:38px;font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-1px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:16px;
}
.step-card h3{margin-bottom:10px}
.step-card p{color:var(--text-2);font-size:15px}
.step-card ul{margin-top:16px;display:grid;gap:10px}
.step-card li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.step-card li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;
  border-radius:50%;background:var(--brand-2);
}

/* 适配信息 */
.spec-wrap{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start;
}
.spec-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--shadow)}
.spec-list{border-top:1px solid var(--border)}
.spec-row{
  display:flex;align-items:baseline;justify-content:space-between;gap:20px;
  padding:18px 4px;border-bottom:1px solid var(--border);
  transition:background .2s ease-out;
}
.spec-row:hover{background:rgba(239,235,255,.6)}
.spec-row dt{color:var(--text-2);font-size:14.5px}
.spec-row dd{
  margin:0;font-weight:700;font-size:15px;
  font-variant-numeric:tabular-nums;text-align:right;color:var(--text);
}
.spec-note{
  margin-top:22px;padding:18px 20px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--border);border-left:4px solid var(--brand);
  color:var(--text-2);font-size:14.5px;
}

/* FAQ */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  margin-bottom:14px;overflow:hidden;
  transition:box-shadow .2s ease-out,border-color .2s ease-out;
}
.faq-item:hover{box-shadow:var(--shadow)}
.faq-item.open{border-color:rgba(91,61,245,.32);box-shadow:var(--shadow)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:22px 26px;text-align:left;font-size:17px;font-weight:600;color:var(--text);
}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand);
  font-size:16px;font-weight:700;line-height:1;
  transition:transform .25s ease-out,background .2s ease-out;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--grad);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out}
.faq-a-inner{padding:0 26px 24px;color:var(--text-2);font-size:15px;line-height:1.85}
.faq-a-inner p{margin-bottom:10px}

/* 相关入口 */
.entry-pills{display:flex;flex-wrap:wrap;gap:12px}
.entry-pills a{
  display:inline-flex;align-items:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--border);
  color:var(--text-2);font-size:14.5px;font-weight:500;
  box-shadow:var(--shadow);
  transition:transform .2s ease-out,color .2s ease-out,border-color .2s ease-out;
}
.entry-pills a:hover{transform:translateY(-2px);color:var(--brand);border-color:rgba(91,61,245,.4)}
.entry-pills a::after{content:"→";color:var(--brand);font-weight:700}

/* 深色统计条 */
.dark-band{
  background:linear-gradient(135deg,#12142B 0%,#1D1F45 100%);
  border-radius:var(--r-xl);
  padding:52px;
  display:grid;grid-template-columns:1fr 1.35fr;gap:44px;align-items:center;
  color:#fff;
}
.dark-band h2{color:#fff}
.dark-band p{color:#A9AEC4;font-size:15px}
.stat-big{
  font-size:clamp(44px,6vw,68px);font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-2px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  margin-bottom:12px;
}
.dark-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.dark-card{
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.2);
  border-radius:var(--r-md);
  padding:22px;box-shadow:var(--shadow-dark);
}
.dark-card strong{display:block;font-size:15px;color:#fff;margin-bottom:8px;font-weight:700}
.dark-card span{font-size:13.5px;color:#A9AEC4;line-height:1.7}

/* CTA 横幅 */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-xl);
  background:var(--grad);
  padding:64px 52px;color:#fff;
  display:grid;grid-template-columns:1.4fr .6fr;gap:36px;align-items:center;
}
.cta-band::after{
  content:"";position:absolute;right:-100px;top:-120px;width:340px;height:340px;
  border-radius:50%;background:rgba(255,255,255,.14);
}
.cta-band h2{color:#fff;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.88);font-size:15.5px;max-width:640px}
.cta-band .btn-primary{background:#fff;color:var(--brand);box-shadow:0 12px 30px rgba(18,20,43,.2);position:relative;z-index:1}
.cta-band .btn-primary:hover{color:var(--brand-hover);background:#fff}
.cta-actions{display:flex;justify-content:flex-end;position:relative;z-index:1}

/* 浮动 CTA */
.float-cta{
  position:fixed;right:24px;bottom:28px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;
  box-shadow:0 14px 32px rgba(91,61,245,.32);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s ease-out,transform .25s ease-out,visibility .25s ease-out;
}
.float-cta.visible{opacity:1;visibility:visible;transform:translateY(0)}
.float-cta:hover{color:#fff;filter:brightness(1.06)}
.float-cta .dot{width:8px;height:8px;border-radius:50%;background:#fff;opacity:.85}

/* 页脚 */
.site-footer{
  background:var(--dark);color:#A9AEC4;
  margin-top:96px;position:relative;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;
  padding:64px 0 44px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand strong{color:#fff;font-size:16.5px;font-weight:800;letter-spacing:-.2px}
.site-footer h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px}
.site-footer a{display:block;color:#A9AEC4;font-size:14px;padding:7px 0}
.site-footer a:hover{color:#fff}
.footer-intro{font-size:14px;line-height:1.85;color:#A9AEC4;max-width:340px}
.footer-contact p{font-size:14px;color:#A9AEC4;margin-bottom:14px}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{
  flex:1 1 170px;height:48px;padding:0 20px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.06);color:#fff;font-size:14px;
  transition:border-color .2s ease-out,box-shadow .2s ease-out;
}
.sub-form input::placeholder{color:#8B90A6}
.sub-form input:focus{
  outline:none;border-color:var(--brand-2);
  box-shadow:0 0 0 3px rgba(20,211,184,.22);
}
.sub-form button{
  height:48px;padding:0 24px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-size:14.5px;font-weight:600;
}
.sub-form button:hover{filter:brightness(1.06)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0 30px;font-size:13px;color:#8B90A6;
}

/* 响应式 */
@media (max-width:1023px){
  :root{--gap-section:72px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .header-actions .btn-sm{display:none}
  .cat-hero{grid-template-columns:1fr;padding:40px 32px;gap:32px}
  .cat-hero-media{order:-1}
  .spec-wrap{grid-template-columns:1fr;gap:32px}
  .dark-band{grid-template-columns:1fr;padding:40px 32px;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px}
  .cta-band{grid-template-columns:1fr;padding:48px 36px;gap:26px}
  .cta-actions{justify-content:flex-start}
  .steps{grid-template-columns:1fr 1fr}
}
@media (max-width:767px){
  .point-grid{grid-template-columns:1fr}
  .point-grid .point-card:nth-child(even){transform:none}
  .dark-cards{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .container{padding:0 18px}
}
@media (max-width:519px){
  :root{--gap-section:56px;--header-h:66px}
  .cat-hero{padding:30px 22px;border-radius:var(--r-lg)}
  .float-badge{left:8px;bottom:10px;padding:10px 14px}
  .float-badge strong{font-size:20px}
  .float-cta{
    right:12px;left:12px;bottom:0;height:56px;border-radius:18px 18px 0 0;
    justify-content:center;padding:0 16px;
    padding-bottom:env(safe-area-inset-bottom);
  }
  .cta-band{padding:36px 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{justify-content:center;text-align:center}
  .faq-q{padding:18px 18px;font-size:15.5px}
  .faq-a-inner{padding:0 18px 20px}
  .point-card,.step-card{padding:24px 20px}
}
@media (min-width:900px){
  .point-grid .point-card:nth-child(even){transform:translateY(30px)}
  .point-grid .point-card:nth-child(even):hover{transform:translateY(26px)}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --brand:#5B3DF5;
  --brand-dark:#4527E0;
  --brand-2:#14D3B8;
  --accent:#FF6B35;
  --bg:#F6F7FC;
  --card:#FFFFFF;
  --ink:#12142B;
  --ink-2:#5A6079;
  --ink-3:#8B90A6;
  --line:#E7E9F5;
  --brand-soft:#EFEBFF;
  --dark-1:#12142B;
  --dark-2:#1D1F45;
  --grad:linear-gradient(135deg,#5B3DF5 0%,#14D3B8 100%);
  --grad-soft:linear-gradient(135deg,#EFEBFF 0%,#E4FBF7 100%);
  --r-lg:28px;
  --r-md:20px;
  --r-sm:14px;
  --r-pill:999px;
  --sh:0 8px 24px rgba(91,61,245,.08);
  --sh-hover:0 16px 40px rgba(91,61,245,.16);
  --sh-dark:0 8px 30px rgba(0,0,0,.25);
  --sec:104px;
}

*,*::before,*::after{box-sizing:border-box;}
html{margin:0;padding:0;scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;background:var(--brand-soft);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease,background .2s ease;}
a:hover{color:var(--brand-dark);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;letter-spacing:.2px;
  border:0;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease;
}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 24px rgba(91,61,245,.26);}
.btn-primary:hover{color:#fff;transform:translateY(-2px) scale(1.02);box-shadow:0 16px 34px rgba(91,61,245,.34);}
.btn-primary:active{transform:translateY(0) scale(1);}
.btn-outline{background:#fff;color:var(--brand);border:1.5px solid var(--brand);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-dark);transform:translateY(-2px);}
.btn-outline:active{transform:translateY(0);}
.btn-text{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14.5px;color:var(--brand);}
.btn-text:hover{color:var(--brand-dark);text-decoration:underline;text-underline-offset:4px;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,252,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(231,233,245,.9);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header .container{padding-top:10px;padding-bottom:10px;}
.site-header.is-scrolled{background:rgba(255,255,255,.92);box-shadow:0 10px 30px rgba(18,20,43,.06);}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:8px 10px 8px 18px;
  box-shadow:0 6px 20px rgba(91,61,245,.06);
  transition:padding .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled .nav-bar{padding-top:5px;padding-bottom:5px;box-shadow:0 12px 30px rgba(91,61,245,.12);}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:18px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(91,61,245,.28);
}
.brand-text{
  font-size:17px;font-weight:800;letter-spacing:-.2px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:2px;}
.nav-links a{
  padding:8px 11px;border-radius:var(--r-pill);font-size:14px;font-weight:500;
  color:var(--ink-2);white-space:nowrap;
}
.nav-links a:hover{background:var(--brand-soft);color:var(--brand);}
.nav-links a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:700;}
.nav-actions{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.nav-cta{height:40px;padding:0 18px;font-size:14px;box-shadow:0 6px 16px rgba(91,61,245,.22);}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:14px;border:1px solid var(--line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .25s ease,opacity .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(18,20,43,.45);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,88vw);background:#fff;z-index:80;
  display:flex;flex-direction:column;transform:translateX(102%);
  transition:transform .32s cubic-bezier(.22,.61,.36,1);
  box-shadow:-12px 0 40px rgba(18,20,43,.18);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 20px;border-bottom:1px solid var(--line);
}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid var(--line);display:grid;place-items:center;font-size:18px;color:var(--ink-2);}
.drawer-close:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-links{flex:1;overflow-y:auto;}
.drawer-links a{display:block;padding:0 20px;line-height:52px;border-bottom:1px solid var(--line);color:var(--ink-2);font-size:15px;}
.drawer-links a:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-links a.is-active{color:var(--brand);font-weight:700;}
.drawer-foot{padding:18px 20px;border-top:1px solid var(--line);}
.drawer-foot .btn{width:100%;}
body.drawer-open{overflow:hidden;}
body.drawer-open .float-cta{display:none;}

/* ---------- 浮动 CTA ---------- */
.float-cta{
  position:fixed;right:26px;bottom:26px;z-index:50;
  display:inline-flex;align-items:center;gap:10px;
  height:52px;padding:0 22px;border-radius:var(--r-pill);
  background:var(--grad);color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 14px 34px rgba(91,61,245,.34);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease,box-shadow .2s ease;
}
.float-cta.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.float-cta:hover{color:#fff;transform:translateY(-3px);box-shadow:0 20px 42px rgba(91,61,245,.4);}
.float-cta-icon{
  width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.22);
  display:grid;place-items:center;font-size:14px;font-weight:800;
}

/* ---------- 通用区块 ---------- */
.section{padding:var(--sec) 0 0;}
.section-inner{position:relative;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap;}
.section-title{font-size:clamp(24px,3.4vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.4px;}
.section-sub{margin-top:12px;color:var(--ink-2);font-size:16px;max-width:640px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:700;letter-spacing:.4px;margin-bottom:16px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad);}

/* ---------- 分类 Hero ---------- */
.cat-hero{padding-top:32px;}
.cat-hero-card{
  background:var(--grad-soft);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:44px 44px 44px 46px;
  display:grid;grid-template-columns:1.08fr .92fr;gap:40px;align-items:center;
  box-shadow:var(--sh);
  overflow:hidden;
  position:relative;
}
.cat-hero-card::after{
  content:"";position:absolute;right:-80px;top:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(20,211,184,.22),rgba(20,211,184,0) 70%);
  pointer-events:none;
}
.cat-hero h1{
  font-size:clamp(30px,3.6vw,44px);line-height:1.2;font-weight:800;letter-spacing:-.5px;
  margin-bottom:16px;max-width:15em;
}
.cat-hero h1 em{
  font-style:normal;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.cat-hero-lead{color:var(--ink-2);font-size:16.5px;max-width:32em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.hero-facts{display:flex;gap:28px;margin-top:32px;flex-wrap:wrap;}
.hero-facts li{display:flex;flex-direction:column;gap:2px;}
.hero-facts strong{
  font-size:26px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-.5px;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}
.hero-facts span{font-size:13px;color:var(--ink-3);}
.cat-hero-media{position:relative;}
.cat-hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-md);
  box-shadow:0 16px 40px rgba(91,61,245,.16);
}
.cat-hero-badge{
  position:absolute;left:-14px;bottom:20px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:12px 18px;box-shadow:0 12px 30px rgba(18,20,43,.12);
  display:flex;align-items:center;gap:12px;
}
.cat-hero-badge b{font-size:20px;font-variant-numeric:tabular-nums;color:var(--accent);}
.cat-hero-badge span{font-size:12.5px;color:var(--ink-3);}

/* ---------- 介绍 + 错落卡组 ---------- */
.lead-text{font-size:17px;line-height:1.9;color:var(--ink-2);max-width:780px;}
.stagger-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:22px;margin-top:40px;}
.stagger-grid > *:nth-child(2){margin-top:30px;}
.stagger-grid > *:nth-child(4){margin-top:30px;}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.card-icon{
  width:44px;height:44px;border-radius:14px;background:var(--brand-soft);
  display:grid;place-items:center;font-size:20px;margin-bottom:18px;
}
.card-title{font-size:19px;font-weight:600;line-height:1.4;margin-bottom:12px;}
.card p{color:var(--ink-2);font-size:15px;line-height:1.85;}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--brand);
}
.card-link span{transition:transform .2s ease;}
.card-link:hover span{transform:translateX(3px);}
.card-accent{background:var(--grad-soft);border-color:transparent;}
.card-wide{grid-column:1 / -1;margin-top:0 !important;display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:start;}

/* ---------- 处置流程 ---------- */
.flow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px;}
.flow-step{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 24px;box-shadow:var(--sh);position:relative;
  transition:transform .2s ease,box-shadow .2s ease;
}
.flow-step:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);}
.flow-num{
  display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;
  background:var(--grad);color:#fff;font-weight:800;font-variant-numeric:tabular-nums;
  font-size:16px;margin-bottom:16px;
}
.flow-step h3{font-size:17px;font-weight:600;margin-bottom:10px;}
.flow-step p{color:var(--ink-2);font-size:14.5px;line-height:1.8;}
.flow-note{
  margin-top:26px;padding:18px 22px;border-radius:var(--r-md);
  background:#fff;border:1px dashed var(--line);color:var(--ink-2);font-size:14.5px;
}
.flow-note strong{color:var(--ink);}

/* ---------- 深色安全区 ---------- */
.dark-section{
  margin-top:var(--sec);
  background:linear-gradient(135deg,rgba(18,20,43,.95),rgba(29,31,69,.93)),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding:76px 0;
  color:#fff;
}
.dark-head{max-width:640px;}
.dark-head .eyebrow{background:rgba(255,255,255,.1);color:#fff;}
.dark-head .eyebrow::before{background:var(--brand-2);}
.dark-head h2{font-size:clamp(24px,3.4vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.4px;}
.dark-head p{margin-top:14px;color:#A9AEC4;font-size:15.5px;}
.dark-badges{display:flex;gap:16px;flex-wrap:wrap;margin-top:30px;}
.dark-badge{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.2);
  border-radius:16px;padding:14px 20px;min-width:132px;
}
.dark-badge b{
  display:block;font-size:24px;font-weight:800;font-variant-numeric:tabular-nums;
  background:linear-gradient(135deg,#14D3B8,#8B7BFF);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;line-height:1.2;
}
.dark-badge span{font-size:12.5px;color:#A9AEC4;}
.dark-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:44px;}
.dark-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-md);padding:26px;box-shadow:var(--sh-dark);
  transition:transform .2s ease,background .2s ease;
}
.dark-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.1);}
.dark-card h3{font-size:17px;font-weight:600;margin-bottom:10px;color:#fff;}
.dark-card p{color:#A9AEC4;font-size:14.5px;line-height:1.85;}

/* ---------- 图文交错 ---------- */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center;margin-top:40px;}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);box-shadow:0 16px 40px rgba(91,61,245,.14);}
.split-list{display:flex;flex-direction:column;gap:18px;margin-top:26px;}
.split-item{
  display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 22px;box-shadow:var(--sh);
  transition:transform .2s ease,box-shadow .2s ease;
}
.split-item:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);}
.split-item i{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  background:var(--brand-soft);color:var(--brand);font-style:normal;font-weight:800;font-size:14px;
}
.split-item h3{font-size:16px;font-weight:600;margin-bottom:6px;}
.split-item p{color:var(--ink-2);font-size:14.5px;line-height:1.8;}

/* ---------- 相关入口胶囊 ---------- */
.pill-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);color:var(--ink-2);
  font-size:14.5px;font-weight:500;box-shadow:var(--sh);
  transition:color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
}
.pill:hover{color:var(--brand);border-color:#D9D1FF;transform:translateY(-2px);box-shadow:var(--sh-hover);}
.pill::after{content:"→";font-size:13px;opacity:.6;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:800px;margin:40px auto 0;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:14px;box-shadow:var(--sh);overflow:hidden;
  transition:box-shadow .2s ease;
}
.faq-item:hover{box-shadow:var(--sh-hover);}
.faq-item.is-open{border-color:#D9D1FF;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink);
  line-height:1.6;
}
.faq-q:hover{color:var(--brand);}
.faq-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand);
  display:grid;place-items:center;font-size:16px;font-weight:700;line-height:1;
  transition:transform .28s ease,background .28s ease,color .28s ease;
}
.faq-item.is-open .faq-icon{background:var(--grad);color:#fff;transform:rotate(135deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.faq-a-inner{padding:0 24px 22px;color:var(--ink-2);font-size:15px;line-height:1.85;}

/* ---------- CTA ---------- */
.cta-block{
  margin-top:var(--sec);
  background:var(--grad);
  border-radius:var(--r-lg);
  padding:56px 52px;
  display:flex;align-items:center;justify-content:space-between;gap:36px;
  flex-wrap:wrap;
  box-shadow:0 22px 50px rgba(91,61,245,.26);
  position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.12);pointer-events:none;
}
.cta-text{position:relative;z-index:1;max-width:640px;}
.cta-text h2{font-size:clamp(22px,3vw,32px);font-weight:700;line-height:1.3;color:#fff;letter-spacing:-.4px;}
.cta-text p{margin-top:12px;color:rgba(255,255,255,.86);font-size:15.5px;}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.btn-white{background:#fff;color:var(--brand);box-shadow:0 12px 28px rgba(18,20,43,.18);}
.btn-white:hover{color:var(--brand-dark);transform:translateY(-2px) scale(1.02);}
.cta-hint{color:rgba(255,255,255,.82);font-size:13.5px;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--sec);
  background:var(--dark-1);
  color:#A9AEC4;
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand strong{color:#fff;font-size:17px;font-weight:800;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:11px;font-size:16px;}
.footer-intro{font-size:14px;line-height:1.9;max-width:34em;}
.site-footer h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.3px;}
.site-footer a{display:block;color:#A9AEC4;font-size:14px;line-height:2.1;}
.site-footer a:hover{color:#fff;}
.footer-contact p{font-size:14px;line-height:1.9;margin-bottom:14px;}
.sub-form{display:flex;gap:10px;flex-wrap:wrap;}
.sub-form input{
  flex:1 1 180px;height:48px;padding:0 20px;border-radius:var(--r-pill);
  background:#fff;border:1px solid rgba(255,255,255,.16);color:var(--ink);font-size:14px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.sub-form input::placeholder{color:var(--ink-3);}
.sub-form input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(91,61,245,.28);}
.sub-form button{
  height:48px;padding:0 24px;border-radius:var(--r-pill);background:var(--grad);color:#fff;
  font-weight:600;font-size:14px;transition:transform .2s ease,box-shadow .2s ease;
}
.sub-form button:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(91,61,245,.34);}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid rgba(255,255,255,.1);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8B90A6;
}

/* ---------- 进入视口 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease;}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .nav-links a{padding:7px 8px;font-size:13px;}
  .brand-text{font-size:16px;}
}
@media (max-width:1023px){
  :root{--sec:78px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
  .cat-hero-card{grid-template-columns:1fr;padding:36px 30px;gap:28px;}
  .cat-hero h1{max-width:none;}
  .cat-hero-media{order:-1;}
  .cat-hero-media img{aspect-ratio:16/9;}
  .stagger-grid{grid-template-columns:1fr;gap:18px;}
  .stagger-grid > *:nth-child(2),
  .stagger-grid > *:nth-child(4){margin-top:0;}
  .card-wide{grid-template-columns:1fr;}
  .flow-grid{grid-template-columns:repeat(2,1fr);}
  .dark-cards{grid-template-columns:1fr;gap:16px;}
  .split{grid-template-columns:1fr;gap:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-block{padding:44px 34px;}
}
@media (max-width:640px){
  :root{--sec:58px;}
  .container{padding:0 18px;}
  body{padding-bottom:72px;}
  .cat-hero{padding-top:20px;}
  .cat-hero-card{padding:28px 22px;border-radius:22px;}
  .cat-hero h1{font-size:27px;}
  .cat-hero-lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-facts{gap:20px;}
  .hero-facts strong{font-size:22px;}
  .cat-hero-badge{left:10px;bottom:12px;padding:10px 14px;}
  .flow-grid{grid-template-columns:1fr;}
  .card{padding:22px;}
  .dark-section{padding:56px 0;}
  .faq-q{padding:18px 18px;font-size:15.5px;}
  .faq-a-inner{padding:0 18px 20px;}
  .cta-block{padding:34px 22px;border-radius:22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}

  .float-cta{
    left:0;right:0;bottom:0;height:auto;
    padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px)) 18px;
    border-radius:20px 20px 0 0;
    justify-content:space-between;
    transform:translateY(100%);
    font-size:14px;
  }
  .float-cta.is-visible{transform:translateY(0);}
  .float-cta:hover{transform:translateY(0);}
}